Pluto is smaller than Russia.
9
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
Jupiter is bigger than all the other planets combined.
254
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
It would take more than 150 years to drive a car to the sun.
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